The worst-kept secret in Boston sports radio has become a reality: 98.5 The Sports Hub will be the new radio home of the Celtics, beginning with the 2013-14 season. It is a multiyear deal, but terms were not disclosed.
“We’re very excited,’’ said Celtics president Rich Gotham. “We don’t look at this as a stand-alone play-by-play deal. We look at it as a partnership that includes play-by-play rights, but also as a promotional platform for our advertisers and our team.